Moondream 3 Preview vs Moondream 3.1.9 B A2 B: cost comparison
Prices updated 2026-10-28 · computed from live provider data
Short answer: Moondream 3.1.9 B A2 B is cheaper on a
3:1 input/output blend — $0.850 per million tokens versus
$0.850, a 0% difference.
Both offer the same 32,000-token context window, so cost is the deciding factor.
Head to head
| Moondream 3 Preview | Moondream 3.1.9 B A2 B | |
|---|---|---|
| Input, per 1M tokens | $0.300 | $0.300 |
| Output, per 1M tokens | $2.50 | $2.50 |
| Blended 3:1, per 1M | $0.850 | $0.850 |
| Context window | 32,000 | 32,000 |
| Vendor | moondream | moondream |
Monthly cost at real volumes
| Workload (input / output) | Moondream 3 Preview | Moondream 3.1.9 B A2 B |
|---|---|---|
| 1M in / 250K out | $0.925 | $0.925 |
| 10M in / 2.5M out | $9.25 | $9.25 |
| 100M in / 25M out | $92.50 | $92.50 |
Which should you pick?
Because the context windows are identical, the cheaper option is the better default. Choose Moondream 3.1.9 B A2 B unless you are already standardised on moondream tooling and want to avoid a second integration.